Finding the Fourth Proportional to 398,502.10, 549,929.10 and 217,214.02
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Solution
The fourth proportional to 398,502.10, 549,929.10 and 217,214.02 is: 299,753.28
Step by Step Solution
- Step 1: Write the proportion equation
398,502.10 : 549,929.10 = 217,214.02 : x - Step 2: Convert to fraction form
398,502.10/549,929.10 = 217,214.02/x - Step 3: Cross multiply
398,502.10x = 549,929.10 × 217,214.02 - Step 4: Simplify right side
398,502.10x = 119,452,310,525.98 - Step 5: Solve for x
x = 119,452,310,525.98/398,502.10 - Step 6: Final answer
x = 299,753.28
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.